Jupiter JTU1101MS 1100 Series Quantum MK II Marching Tuba - Key of BBbThe JTU1101MS silver plated Quantum MK II Marching Tuba incorporates unique features that puts it ahead of the competition. A nickel silver receiver and thinner bell deliver a centered, bright sound; The ergonomic first valve tuning slide trigger allows for quick tuning while the extended range main tuning slide offers greater tuning range. Features Nickel silver mouthpiece receiver proivdes a bright but centered sound A light weight thinner bell